Lamp guard construction



p 6, 1955 J. D. KEVORKIAN 2,717,308

LAMP GUARD CONSTRUCTION Filed April 12, 1950 dgsepn D. KEVORKIANATTORNEY United StatesPaterit This invention relates .to lamp guards andmorejparticularl'y to an improved construction'thereof.

Among the principal objectslof the Ipresent invention is to providealamp ,guard offthe type having separable reflector and wire guardmember'sj fora lamp to "be pro- 'tectively enclosed therebetweenand'whichare relatively so designed as to not only. insure rnaximumprotection for and operatingefliciency ofthefllamp, but also provide foreasy assembly and disassembly of the members as may be required inconnection with replacement of'the lamp. 1

A further-andimportant objectofthe. invention is to provide a troublelamp guard unit with a revoluble supporting hook -so-arr-anged-as nottoiriterfere in'=any=way with the separabilit-yof therefleetonand wireguardmembers of the unit,-the-hook being swivelly connected to- -'thereflectonmember-as-a-permanentelement thereof.

Still-other objeets-ofthe-invention-are to provide a lamp guardunits-whichris simple:andainexpensive in con- WhlClllS stronganddurable'inuse.

Other objects and advantages of the invention will appear more fullyhereinafter, it being understood that the present invention consistssubstantially in the combination, construction, location and relativearrangement of parts, as more fully described hereinafter, as shown inthe accompanying drawings and as finally pointed out in the appendedclaims.

In the accompanying drawings, which are illustrative of a preferredconstruction of lamp guard embodying the principles of the presentinvention:

Figure 1 is a perspective view of the guard in its assembled form;

Figure 2 is a vertical sectional view thereof;

Figure 3 is a top plan view thereof;

Figure 4 is a fragmentary sectional view of the upper 50 portion of thelamp guard illustrating the mode of effecting assembly or disassembly ofthe separable parts thereof; and

Figure 5 is a fragmentary sectional view corresponding to Figure 4 butshowing the guard parts in assembled relation.

Referring now more particularly to the drawings, it will be observedthat the lamp guard of the present invention essentially consists of areflector part suitably cut and stamped of sheet metal, a wire guardpart 11 formed of wire rod elements which are severally bent and weldedtogether to form an open frame which mates with the reflector part 10 toprovide a protective enclosure for a lamp (not shown), and a supportingbook 12 for the enclosure which is swivelly secured to the upper end ofthe reflector part 10.

The sheet metal reflector part 10 is formed to provide a central orintermediate body portion 13 of substantially semi-cylindrical shape intransverse cross-section, the opposite ends 14 and 15 of saidintermediate body portion being correspondingly concaved, as shown, toprovide maximum light-reflecting efliciency for the unit. The

lower "concaved end 15 of the reflector. partf10 is axially extended toprovide a collar member'flifofsemi-cylindricalshape, the oppositeextremities df whicharej're- ..spectively provided with outwardlyprojecting coplanar 5 lugs1'7, eachrhaving5a tapped hole'ther'einforthreadeiily receiving a suitableclampingscrew'18.. v "To reinforce and.strengthen the sheetinetal. reflector part '10, itfis provided with.apair. of'circumferentially extending ribs 19-19, which are. arranged inaxially 10 .spaced,iparallel-relation it being notedjthatthese ribs are7 each so embossed'in the reflector shell as. toproject. in-

teriorly thereof and that' 'the opposite endsofgeachl rib respectivelyterminate short of thegmarginaledges 20.."2'0 of the reflector shell. vi

'The wire guard part'llof the lamp. guard unitl-isformed "of .a -wirerod elementZl dfQinvented. U-shape,fawirerod element '22 of invertedlJ-shape andamair o fd-shap'ed wire rod elements12323, all-- of which,elements, are suitably' secured togethenjas shown, as by spot-welding at20 the points 24, to provide. a rigid. openffrarne era shapewhich.,generally conforms-and is. complemental. tohthat of. thereflector part 10. The vertically extending Iportions- '2'5 of the wire.rod.v element 21 are symmetrically disposed, to either sidesoflthe.vertieally'extending 5 por'tion 26 of the element.22,"whiletheltransversecircular v elements 23- 23, which hold.theportions 2 5.25tand-2:6 -incircumferentially spaced relatiomare eachdfaallength sufficient to. present. theLopposite .ends thereoffjustiinsi de .-the marginal edges.20 ;20 of thereflectorshe'll whenfthe wire guard and theshell areassembled asshown'in Figure 1. lTheilowerextremities of the wire portions"2'525 and26 are respectively "secured,preferably by welding, to a collarmember 27 of semi-cylindricalshapefthelatter being provided with outwardly projecting fcoplanar'Tlugswhichare respectively apertured-for,;projection'there- "through "of theclamping screws"18 "emplbyed' tofclamp the "collar members 16"and'27about a'lamp socket or holder (not shown). It will be noted that thetransverse circular elements 23-23 are secured to the inner sides of thewire portions 252526 and are respectively disposed in circumferentialcontinuation of the internal ribs 1919 of the reflector shell 10. Thus,when the shell and wire guard are assembled, the ribs 1919 and thecircular elements 23-23 provide an axially spaced pair 5 of internalstrengthening ribs extending circumferentially about the fullcircumference of the cylindrical portion of the assembled unit.

For detachably securing together the upper ends of the reflector shell10 and the wire guard 11, the central wire 7 rod element 22 of the guardis provided with a hookshaped terminal extremity 29 which is adapted tobe projected into an opening 30 suitably provided therefor in the top ofthe reflector shell. When it is desired to replace a lamp, it is merelynecessary to unclamp the collar members 16 and 27 from the lamp socketor holder, following which the reflector shell and wire guard may beswung apart, as shown in Figure 4, to remove the guard from the lampholder. Should it be desired to completely separate the wire guard 11from the shell, this may be readily effected by disengaging the hookedend 29 of the wire guard from the opening 30 in the shell, butordinarily the hooked end remains seated in the opening 30 to provide ahinged connection between the top ends of the sheet metal shell and theWire guard.

Swivelly connected to the top end of the reflector shell 10 is a wirerod supporting hook 12, this hook being provided with a shank 31 whichis rotatably held in an opening 32 in the shell, preferably by a pair ofsuitably flanged elements 3334. It will be noted that the hookedextremity 29 of the wire guard is bent, as at 35, to adequately clearthe bottom flange 34 of the supporting hook 12 and so does not imposeany interference to free rotaaim of at latter about the axis of itsshank. A150, it will be observed that the supporting hook is swivellyconments to constitute a rigid lamp-protecting grille adapted forremovable assembly with said reflector member, one

1. In a lamp guard of the character described, a sheet metal reflectormember having a central body portion of substantially semi-cylindricalshape and opposite end portions disposed respectively at the top andbase of the guard and of generally spherical contour, said central bodyportion having embossed therein a pair of axially spaced,circumferentially extending ribs projecting interiorly of the shell withthe opposite ends of each rib respectively terminating short of theopposite vertical edges of said body portion, and a guard member formedof interconnected wire rod elements to form an open frame of a shapegenerally complemental to that of said reflector member, said wire rodelements including a pair of transversely curved wire rod elementsaxially spaced for coplanar disposition relatively to said internal ribsof the reflector shell with the opposite extremities of each of saidtransversely curved wire rod elements positioned inside of, andextending inwardly beyond, the vertical edges aforesaid of the reflectorshell, whereby upon assembly of said reflector and guard members each ofsaid transversely curved wire rod elements constitutes a circumferentialcontinuation of an internal rib of the reflector shell.

2. In a lamp guard of the character described, a sheet metal reflectormember having a body portion of generv ally semi-cylindrical shape and aconcaved top portion, a' frame member formed of interconnected wire rodeleof said Wire rod elements being provided at the top end of said framewith a hook-like extension for projection into an aperture formed in theconcaved top portion of the reflector member, said hook-like extension,when projected into said aperture, providing a hinged separableconnection between the-'to'p ends of said reflector and frame members,and a supporting hook for the guard swivelly mounted in said top portionof the reflector member. Y

3. In a lamp guard of the character described, a sheet metal reflectormember having a body portion of generally semi-cylindrical shape andaconcaved top portion, a plurality of interconnected wire rods forming arigid open-framed guard member of a shape generally complemental to thatof said reflector member adapted for removable securement to the latterto provide an enclosure for a lamp, said top portionof the reflectorhaving an aperture therein and said guard member having' a hook-likeextension at its upper end for projection into said aperture to providea hinged separable connection between said reflector and guard member,said hook-like extension being formed as an integral part of one of saidwire rods, and a supporting hook for the guard independent of said guardmember and swivelly mounted in said portion of the reflector member.

References Cited in the file of this patent UNITED STATES PATENTS 71,722,773 Stewart July 30, 1929 1,843,418 Ericson Feb. 2, 1932 2,178,907Hockley Nov. 7, 1939 2,318,329 Popp V May 4, 1943 2,580,359 Moineau Dec.25, 1951 FOREIGN PATENTS 246,121- Switzerland Dec. 15, 1946

